event.stopPropagation()和event.stopImmediatePropagation()之间有什么区别?


当前回答

在这里,我添加了stopPropagation vs stopImmediatePropagation的jsf示例。 JSFIDDLE

let stopProp = document.getElementById('stopPropagation'); let stopImmediate = document.getElementById('stopImmediatebtn'); let defaultbtn = document.getElementById("defalut-btn"); stopProp.addEventListener("click", function(event){ event.stopPropagation(); console.log('stopPropagation..') }) stopProp.addEventListener("click", function(event){ console.log('AnotherClick') }) stopImmediate.addEventListener("click", function(event){ event.stopImmediatePropagation(); console.log('stopimmediate') }) stopImmediate.addEventListener("click", function(event){ console.log('ImmediateStop Another event wont work') }) defaultbtn.addEventListener("click", function(event){ alert("Default Clik"); }) defaultbtn.addEventListener("click", function(event){ console.log("Second event defined will also work same time...") }) div{ margin: 10px; } <p> The simple example for event.stopPropagation and stopImmediatePropagation? Please open console to view the results and click both button. </p> <div > <button id="stopPropagation"> stopPropagation-Button </button> </div> <div id="grand-div"> <div class="new" id="parent-div"> <button id="stopImmediatebtn"> StopImmediate </button> </div> </div> <div> <button id="defalut-btn"> Normat Button </button> </div>

其他回答

下面是一个演示来说明两者的区别:

document.querySelectorAll(“按钮”)[0]。addEventListener(“点击”,e = > { e.stopPropagation (); 提醒(1); }); document.querySelectorAll(“按钮”)[1]。addEventListener(“点击”,e = > { e.stopImmediatePropagation (); 提醒(1); }); document.querySelectorAll(“按钮”)[0]。addEventListener(“点击”,e = > { 提醒(2); }); document.querySelectorAll(“按钮”)[1]。addEventListener(“点击”,e = > { 提醒(2); }); < div onclick = "警报(3)" > < >按钮1……2 > < /按钮 <按钮> 1 > < /按钮 < / div >

请注意,可以将多个事件处理程序附加到元素上的事件。

事件。stopPropagation将阻止父元素上的处理程序运行。 调用的事件。stopImmediatePropagation还将阻止同一元素上的其他处理程序运行。

jQuery API:

除了保留任何额外 元素的处理程序 执行后,此方法还将停止 通过隐式调用 event.stopPropagation()。简单地 防止事件冒泡到 祖先元素但允许其他元素 执行相同的事件处理程序 元素,我们可以使用 event.stopPropagation()。 使用 event.isImmediatePropagationStopped () 想知道这种方法是否曾经 调用(在该事件对象上)。

简而言之:event. stoppropagation()允许同一元素上的其他处理程序被执行,而event. stopimmediatepropagation()阻止每个事件运行。

event. stoppropagation()允许执行同一元素上的其他处理程序,而event. stopimmediatepropagation()阻止运行每个事件。例如下面的jQuery代码块。

$("p").click(function(event)
{ event.stopImmediatePropagation();
});
$("p").click(function(event)
{ // This function won't be executed 
$(this).css("color", "#fff7e3");
});

如果事件。stopPropagation在前面的例子中使用,然后在p元素上的下一个点击事件改变css将触发,但在case event. stopimmediatepropagation()中,下一个p点击事件将不会触发。

令人惊讶的是,所有其他答案都只说了一半事实或实际上是错误的!

e.s stopimmediatepropagation()停止为该事件调用任何进一步的处理程序,没有异常 e.s stoppropagation()类似,但如果尚未调用,仍然调用此元素上此阶段的所有处理程序

什么阶段?

例如,一个点击事件总是首先沿着DOM向下走(称为“捕获阶段”),最后到达事件的起源(“目标阶段”),然后再次冒泡(“冒泡阶段”)。使用addEventListener(),您可以分别为捕获阶段和冒泡阶段注册多个处理程序。(目标阶段在目标上调用这两种类型的处理程序,没有区别。)

这是其他答案的错误之处:

quote: “event.stopPropagation() allows other handlers on the same element to be executed” correction: if stopped in the capture phase, bubble phase handlers will never be reached, also skipping them on the same element quote: “event.stopPropagation() [...] is used to stop executions of its corresponding parent handler only” correction: if propagation is stopped in the capture phase, handlers on any children, including the target aren’t called either, not only parents ...and: if propagation is stopped in the bubble phase, all capture phase handlers have already been called, including those on parents

一个小提琴和mozilla.org事件阶段解释与演示。